Oil filter



AprilA 4,- 1944.

L. D. FULTON OIL FILTER Filed July 9, 1942 2 Sheets-Sheet 2 PatentedApr. 4, 1944 OIL FILTER Luther D. Fulton, deceased, late of Titusville,Pa., by Katherine Cox Fulton, executrix, Titusville, Pa., assignor ofone-half to Hammond Iron Works, Warren, Pa., a corporation of Pennsyl-Vania Application July 9, 1942, Serial No. 450,328

(Cl. Mii-154) 2 Claims.

The present invention relates to new and useful improvements in oilfilters and constitutes an improvement in the iilter covered by LettersPatent No. 1,547,315 dated July 28, 1925, and issued to Luther D.Fulton.

The present invention embodies the provision of a screen protection ringfor the lter to prevent collapsing of the screen due to pressure exertedthereon in a reverse direction when it is desired to pump a, washingfluid through the lter head in a direction opposite to the normal iiowof oil through the filter for the purpose of cleaning the same.

A further object is to provide a screen protection ring for the lter ofsimple and practical construction, which is eiicient and reliable inperformance, relatively inexpensive to manufacture and otherwise welladapted for the purposes for which the same is intended.

Other objects and advantages reside in the details of construction andoperation as more fully hereinafter described and claimed, referencebeing had to the accompanying drawings forming part hereof, wherein likenumerals refer to like parts throughout and in which:

Figure 1 is a vertical sectional View.

Figure 2 is a tranverse sectional View taken substantially on a line 2 2of Figure 1.

Figure 3 is a fragmentary view in elevation showing the connection forthe split ends of the protection ring, and

Figure 4 is a vertical sectional view taken substantially on the line4-4 of Figure 3.

Referring now to the drawings in detail, the numeral 5 designates theusual lter tank for oil or the like and containing the clay, fullersearth, or other filter lmedium and to which is secured the extensionring 6 by rivets or thelike l.

The extension ring 6 is formed with an internal shoulder 8 on which isseated the flange 9 of the supporting ring IIJ of cylindrical form andhaving the slots II formed therein. The ltering screens I2 and I3 arepositioned against the internal walls of the ring l and secured theretoby wire retaining rings I4 seated in grooves I5 formed in the walls ofthe ring I0.

The oil normally passes from the tank through the screens I2 and I3 andthrough the openings Il in the ring l0 and then outwardly through thepipe i6 in the side wall of the extension ring 6.

In order to prevent collapsing of the screens I2 and I3 when pressure issubjected thereto in a reverse direction, a supporting ring I1 isprovided which is of longitudinally split cylindrical tailedexplanation.

form and positioned against the inner surface oi the screens I2 and I3,the ring Il being persplit edges thereof, is provided with spaced'flanges I9 and 28 connected by bolts 2l adapted to expand the supportingring I1 against the screen.

Positioned in overlying relation with respect to the split edges of thering I'I is a plate 22 inwardly-of which is a second plate 23 having setscrews 24 threaded therethrough for bearing against the plate 22 andforcing the same against the split edges of the ring Il. The plate 23 isbacked against the bolt 2| by pressure exerted on the screws 2i in amanner as will be apparent, and as clearly shownin Figures 3 and 4 ofthe drawings.

It is believed the details of construction and manner of use of thedevice will be readily understood from theforegoing without further de-Having described the claimed as new is:

1. A lter comprising a casing open at one end for receiving the materialto be filtered and also having an outlet leading from the casing, meanssupporting a foraminous filtering member in spaced relation to the wallsof the casing, a longitudinally split perforated cylinder, flanges onthe cylinder adjacent the split edges of the cylinder, screw meansengaging the flanges for expanding the cylinder against the innersurface of the ltering member, a cover plate overlapping the split edgesof the cylinder and means engaging the screw means for retaining thecover plate in position.

2. A filter comprising a casing open at one end for receiving thematerial to be ltered and also having an outlet leading from the casing,means supporting a foramnous ltering member in spaced relation to thewalls of the casing, a longitudinally split perforated cylinder, flangeson the cylinder adjacent the split edges oi the cylinder, screw meansengaging the flanges for expanding the cylinder against the innersurface of the linvention, what is .tering member, a cover plateoverlapping the

